we kill our own people. >> jon: what about a death star? >> i signed that petition. >> jon: did you really? why didn't you sign that petition? [ laughter ] when you think about it if you say it's sort of an easier technology, is that the kind of thing where -- you know, i always -- listen, i watch a lot of movies. anything like the clone armies, drones -- all those types of things. you see 30 years from now there may be robotic warfare where there are, you know killing fields of robots that are just kind of at each other. >> sure darfa. >> jon: who is that? >> defense -- >> jon: oh, yeah, yeah. >> yeah so they've got work going on right now to do that. i also think that there's a lot of work going on inside the military and outside the military to commercialize these but even to do humanitarian aid.